I Have three of these cameras in this sale, they have been opened but not checked,but as far as I am aware they are in great condition, please see the pics. If for any reason they do not work they are certainly a good deterrent, I'm not an engineer and don't have the knowledge to even test them, even still they are good buy.
PRO - VIEW
2.8 - 12mm Vari-Focal Lens
Up to 40 Meters IR Range
Dual Ring IR Protection
Outdoor IR BULLET CAMERA WITH VARI FOVAL LENS
I cannot guarantee that these are working or not, but there is nothing to show that they are not in working order.